We have found 4 software records in our database eligible for .xls to .xlsb file format conversion.
You can create Excel binary workbook (.xlsb) from standard spreadsheets (.xls) in Microsoft Excel itself, using the standard File ► Save.. found in the program.
The very same xls to xlsb conversion can also be done in other spreadsheet programs with Excel format support. Used to create binary files that load much faster compared to standard spreadsheets.
XLS
Files with xls extension are best known as spreadsheets from Microsoft Excel. A spreadsheet is basically a grid of cells sorted in rows and columns. Each cell can contain text, numeric or formula data. Excel XLS spreadsheets can be opened in most other similar programs, such as OpenOffice.org Calc.
XLSB
Files with xlsb extension is used by Microsoft Excel spreadsheet editor distributed with the Microsoft Office. An xlsb file contains Excel workbook stored in a binary file format (BIFF12). The BIFF12 binary format is used for data that can not be stored in the Open XML text format.